Compilare: user.cpp: In function ‘int main()’: user.cpp:10:13: warning: unused variable ‘y’ [-Wunused-variable] int n,x,z=0,y,u,cn,i,ct=0; ^ user.cpp:10:17: warning: variable ‘cn’ set but not used [-Wunused-but-set-variable] int n,x,z=0,y,u,cn,i,ct=0; ^ user.cpp:10:20: warning: variable ‘i’ set but not used [-Wunused-but-set-variable] int n,x,z=0,y,u,cn,i,ct=0; ^ user.cpp:10:22: warning: unused variable ‘ct’ [-Wunused-variable] int n,x,z=0,y,u,cn,i,ct=0; ^ user.cpp:11:5: warning: variable ‘pozx’ set but not used [-Wunused-but-set-variable] int pozx,a,b; ^ user.cpp:44:21: warning: ‘u’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<z<<" "<<a<<" "<<u; ^